NetflixWhat Jennifer Did revisits the horrifying tale of Jennifer Pan, who became the subject of Canadian headlines when she survived a home invasion that took the life of her mother Bich and left her father Hann in critical condition. Nonetheless, American Murder: The Family Next Door writer/director Jenny Popplewell’s Netflix documentary (April 10) is a clumsy addition to the ever-expanding true-crime canon, tipping off its central twist with its title, leaving out key details that might have